Added Variable Values

Advanced Software Engineering/Advanced Software Engineering/Advanced Software Engineering.csproj

@@ -89,7 +89,7 @@
     <Compile Include="Verbs\DrawingVerbs\ResetPen.cs" />
     <Compile Include="Verbs\DrawingVerbs\Square.cs" />
     <Compile Include="Verbs\DrawingVerbs\Triangle.cs" />
-    <Compile Include="Verbs\Value\Expression.cs" />
+    <Compile Include="Verbs\Value\ValueTypes\ExpressionValue.cs" />
     <Compile Include="Verbs\Value\DeclareVariable.cs" />
     <Compile Include="Verbs\Value\UpdateVariable.cs" />
     <Compile Include="Verbs\Value\ValueFactory.cs" />
@@ -100,6 +100,7 @@
     <Compile Include="Verbs\Value\ValueTypes\ColorValue.cs" />
     <Compile Include="Verbs\Value\ValueTypes\DoubleValue.cs" />
     <Compile Include="Verbs\Value\ValueTypes\IntValue.cs" />
+    <Compile Include="Verbs\Value\ValueTypes\VariableValue.cs" />
     <Compile Include="Windows\AboutWindow.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -207,6 +208,8 @@
   <ItemGroup>
     <Content Include="Resources\logo.ico" />
   </ItemGroup>
-  <ItemGroup />
+  <ItemGroup>
+    <Folder Include="Exceptions\" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

Advanced Software Engineering/Advanced Software Engineering/Verbs/Value/ValueTypes/VariableValue.cs

@@ -1,38 +1,48 @@
 using System;
-using System.Collections.Generic;
 using System.Drawing;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Advanced_Software_Engineering.Verbs.Value.ValueTypes {
-    class VariableValue : IValue {
+
+    public class VariableValue : IValue {
+        private Drawer drawer;
+        private string variableName;
+
+        public VariableValue(Drawer drawer, string variableName) {
+            this.variableName = variableName;
+            if (!drawer.CheckVariableExists(variableName)) throw new Exception("Tried to access " + variableName + " before it was assigned. ");
+            this.drawer = drawer;
+        }
+
+        private IValue get() {
+            return drawer.GetVariable(variableName);
+        }
+
         public string GetDescription() {
-            throw new NotImplementedException();
+            return get().GetDescription();
         }
 
         public string GetOriginalType() {
-            throw new NotImplementedException();
+            return get().GetOriginalType();
         }
 
         public bool isInitialised() {
-            throw new NotImplementedException();
+            return get().isInitialised();
         }
 
         public bool ToBool() {
-            throw new NotImplementedException();
+            return get().ToBool();
         }
 
         public Color ToColor() {
-            throw new NotImplementedException();
+            return get().ToColor();
         }
 
         public double ToDouble() {
-            throw new NotImplementedException();
+            return get().ToDouble();
         }
 
         public int ToInt() {
-            throw new NotImplementedException();
+            return get().ToInt();
         }
     }
 }